/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef OHOS_SINGLE_INSTANCE_H
#define OHOS_SINGLE_INSTANCE_H
namespace OHOS {
namespace Rosen {
#define DECLARE_SINGLE_INSTANCE_BASE(className)             \
public:                                                     \
    static className& GetInstance()                         \
    {                                                       \
        static className instance;                          \
        return instance;                                    \
    }                                                       \
    className(const className&) = delete;                   \
    className& operator= (const className&) = delete;       \
    className(className&&) = delete;                        \
    className& operator= (className&&) = delete;

#define DECLARE_SINGLE_INSTANCE(className)  \
    DECLARE_SINGLE_INSTANCE_BASE(className) \
protected:                                  \
    className() = default;                  \
    virtual ~className() = default;
} // namespace OHOS
}
#endif // OHOS_SINGLE_INSTANCE_H
